094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
78 lines
4.0 KiB
LLVM
78 lines
4.0 KiB
LLVM
; RUN: opt -loop-reduce -S %s | FileCheck %s
|
|
; RUN: opt --try-experimental-debuginfo-iterators -loop-reduce -S %s | FileCheck %s
|
|
|
|
;; Test that LSR preserves debug-info for induction variables and scev-based
|
|
;; salvaging produces short DIExpressions that use a constant offset from the
|
|
;; induction variable.
|
|
|
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
define dso_local void @foo(ptr nocapture %p) local_unnamed_addr !dbg !7 {
|
|
; CHECK-LABEL: @foo(
|
|
entry:
|
|
call void @llvm.dbg.value(metadata ptr %p, metadata !13, metadata !DIExpression()), !dbg !16
|
|
call void @llvm.dbg.value(metadata i8 0, metadata !14, metadata !DIExpression()), !dbg !17
|
|
br label %for.body, !dbg !18
|
|
|
|
for.cond.cleanup: ; preds = %for.body
|
|
ret void, !dbg !19
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
; CHECK-LABEL: for.body:
|
|
%i.06 = phi i8 [ 0, %entry ], [ %inc, %for.body ]
|
|
%p.addr.05 = phi ptr [ %p, %entry ], [ %add.ptr, %for.body ]
|
|
call void @llvm.dbg.value(metadata i8 %i.06, metadata !14, metadata !DIExpression()), !dbg !17
|
|
call void @llvm.dbg.value(metadata ptr %p.addr.05, metadata !13, metadata !DIExpression()), !dbg !16
|
|
; CHECK-NOT: #dbg_value(ptr undef
|
|
; CHECK: #dbg_value(ptr %lsr.iv, ![[MID_p:[0-9]+]], !DIExpression(DW_OP_constu, 3, DW_OP_minus, DW_OP_stack_value),
|
|
%add.ptr = getelementptr inbounds i8, ptr %p.addr.05, i64 3, !dbg !20
|
|
call void @llvm.dbg.value(metadata ptr %add.ptr, metadata !13, metadata !DIExpression()), !dbg !16
|
|
; CHECK-NOT: #dbg_value(ptr undef
|
|
; CHECK: #dbg_value(ptr %lsr.iv, ![[MID_p]], !DIExpression(),
|
|
store i8 %i.06, ptr %add.ptr, align 1, !dbg !23, !tbaa !24
|
|
%inc = add nuw nsw i8 %i.06, 1, !dbg !27
|
|
call void @llvm.dbg.value(metadata i8 %inc, metadata !14, metadata !DIExpression()), !dbg !17
|
|
%exitcond.not = icmp eq i8 %inc, 32, !dbg !28
|
|
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !dbg !18, !llvm.loop !29
|
|
}
|
|
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5}
|
|
!llvm.ident = !{!6}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
|
!1 = !DIFile(filename: "lsrdbg.c", directory: "/")
|
|
!2 = !{}
|
|
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
|
!6 = !{!"clang version 12.0.0"}
|
|
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
|
|
!8 = !DISubroutineType(types: !9)
|
|
!9 = !{null, !10}
|
|
!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
|
|
!11 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
|
|
!12 = !{!13, !14}
|
|
!13 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 2, type: !10)
|
|
; CHECK: ![[MID_p]] = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 2, type: !10)
|
|
!14 = !DILocalVariable(name: "i", scope: !15, file: !1, line: 4, type: !11)
|
|
!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)
|
|
!16 = !DILocation(line: 0, scope: !7)
|
|
!17 = !DILocation(line: 0, scope: !15)
|
|
!18 = !DILocation(line: 4, column: 3, scope: !15)
|
|
!19 = !DILocation(line: 8, column: 1, scope: !7)
|
|
!20 = !DILocation(line: 5, column: 7, scope: !21)
|
|
!21 = distinct !DILexicalBlock(scope: !22, file: !1, line: 4, column: 42)
|
|
!22 = distinct !DILexicalBlock(scope: !15, file: !1, line: 4, column: 3)
|
|
!23 = !DILocation(line: 6, column: 8, scope: !21)
|
|
!24 = !{!25, !25, i64 0}
|
|
!25 = !{!"omnipotent char", !26, i64 0}
|
|
!26 = !{!"Simple C/C++ TBAA"}
|
|
!27 = !DILocation(line: 4, column: 38, scope: !22)
|
|
!28 = !DILocation(line: 4, column: 31, scope: !22)
|
|
!29 = distinct !{!29, !18, !30, !31}
|
|
!30 = !DILocation(line: 7, column: 3, scope: !15)
|
|
!31 = !{!"llvm.loop.unroll.disable"}
|